8
New Threat Aspects after 9/11: Terror attacks can be internationally coordinated operations Time frame for planning an attack can be years Terrorists are willing to commit collective suicide Terrorists are capable of using sophisticated logistics Non-terrorist threat: orphan sources in steel factories

9
LOSS OF CONTROL OVER RADIOACTIVE MATERIAL IN USA For material licensed under the Atomic Energy Act (1954): Up to 2 million devices with radioactive sources have been distributed to 190,000 US licences 300 reports/year of lost/stolen material (mostly short-lived or small sources) US has lost control over about 30,000 radioactive sources (orphans)* *US EPA (1998)

31
Advantages of new system: In situ detection of smelting Detection Limit ~ 0.1 Bq/g In case of accident: Economical Losses are drastically reduced System is under development We are open for funding from steel factories (potential patent)